GNU Patch up to 2.7.2 diff File set_hunkmax resource management

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in GNU Patch up to 2.7.2. Impacted is the function set_hunkmax of the component diff File Handler. The manipulation leads to resource management. This vulnerability is uniquely identified as CVE-2014-9637. Local access is required to approach this attack. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in GNU Patch up to 2.7.2 and classified as problematic. This issue affects the function set_hunkmax of the component diff File Handler. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. The summary by CVE is:

GNU patch 2.7.2 and earlier allows remote attackers to cause a denial of service (memory consumption and segmentation fault) via a crafted diff file.

The bug was discovered 01/23/2015. The weakness was disclosed 08/25/2017 by Laszlo Boszormenyi (oss-sec). The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2014-9637 since 01/22/2015. The exploitation is known to be easy. An attack has to be approached locally. A simple authentication is required for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 81112 (Fedora 21 : patch-2.7.3-1.fc21 (2015-1134)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171115 (SUSE Enterprise Linux Security Update for patch (SUSE-SU-2018:1162-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (81112) and SecurityFocus (BID 72286†). The entries VDB-56813 and VDB-105740 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 81112
Nessus Name: Fedora 21 : patch-2.7.3-1.fc21 (2015-1134)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for patch FEDORA-2015-3556
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: git.savannah.gnu.org

Timelineinfo

01/22/2015 🔍
01/22/2015 +0 days 🔍
01/23/2015 +1 days 🔍
01/25/2015 +2 days 🔍
02/02/2015 +8 days 🔍
08/25/2017 +935 days 🔍
08/25/2017 +0 days 🔍
08/27/2017 +2 days 🔍
12/16/2022 +1937 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: USN-2651-1
Researcher: Laszlo Boszormenyi
Status: Not defined
Confirmation: 🔍

CVE: CVE-2014-9637 (🔍)
GCVE (CVE): GCVE-0-2014-9637
GCVE (VulDB): GCVE-100-105737
SecurityFocus: 72286 - GNU patch 'set_hunkmax()' Function Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 08/27/2017 06:45
Updated: 12/16/2022 15:52
Changes: 08/27/2017 06:45 (71), 11/10/2019 11:01 (9), 12/16/2022 15:52 (5)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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